Automatic wireless signal.



G. ENGELBREKT AUTOMATIC WIRELESS SIGNAL.

APPLICATION men JUNE 27. 1916 1,265,633. Patented May 7,1918.

2 SHEETS-SHEET l- WITNESSES Gzwia INVENTORI ATTO R N EIY G. ENGELBREKT.

AUTOMAHC WIRELESS SIGNAL.

APPLICATION HLED JUNE 27,1916.

Patented May 7,1918.

2 SHEETS-SHEET 2- AT' ORN EY GUS'IAF ENGE LBBEKT, OF SUPERIOR, WISCONSIN.

All!.llOINlLA'J.IC WIRELESS SIGNAL.

Specification of Letters Patent.

" Patented May 7, 191a.

Application filed June a7, 1916. Serial no. 106,204.

To all :who'm it may concern:

Ere 1t known that I, GUSTAF ENGEIBREKT, a c1t1zen of the United States, residin at Superior, in the county of Douglas and tate ing vessels. The object of the invention is to 1provide an automatic means whereby signa s may be sent out and received In alternation during brief or sufiiciently prolonged periods to become effective.

In accordance with the present invention there is rovided a wireless sending outfit and a wireless receiving outfit, with a 'con trolling switch driven continuously by a suitable source of power to couple u a sending outfit for a brief period of time, and then couple up the receivin outfit for a similar brief period of time, t e coupling of the sending and receiving outfits being in alternation. There is also provided an aerial so constructed as to be particularly sensitive to vibrations produced by very faint ether waves.

The invention will be best understood from a consideration of the following detailed description, taken in connection with the accompanying drawings forming part of this specification, with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications come within the scope of the appended claim.

In the drawings Figure 1 is a diagram of an automatic sending and receiving outfit embodying the present invention.

Fig. 2 is a view of with the invention.

Fig. 3 isan elevation partly in section of an automatic switch for alternating the sending and receiving outfits.

Fig- 4 is a section on the line 4-4 of Fig. 3.

Fig. 5 is a plan view of the aerial.

Referring to the drawings there is shown an aerial 1 comprising a frusto-conical coil which may be made of a heavy copper strand composed of many fine copper wires landed a small vessel equipped together. Such an aerial is readily supported upon a mast, such as the mast 2 of a vessel 3 shown in Fig. 2, such vessel being a smallsailing vessel to illustrate one adaptation of the invention. It will be understood that the invention may be used upon larger vessels than shown in Fig. 2 and may be used upon steam or like vessels instead of sailing vessels. Furthermore, it is quite feasible to use the invention upon other traveling means than water vessels, as, for instance, the invention may be installed upon a locomotlve.

The particular character of the conveyance carrying the invention is not of moment, because the salient features of the invention have to do with the wireless side thereof, and not with the conveyance, since it is not even necessary that the invention be installed upon a moving structure.

At some convenient point, say, in the cabin 4 of the vessel 3, there is provided a switch structure 5 comprising a circular series of conducting blocks 6, 7, respectively, in alternation, with the adjacent ends of the blocks separated by insulating fillers 8.

The circular series or ring of blocks 6 and 7 is conveniently mounted upon a support 9 in turn carried by a box or casing 10 inclosing a motor, such as clockworks, indicated by gearing 11, 12, in Fig. 3, the gear 12 being fast to an arbor 13 projecting through the support 9 and within the ring carrying a hub 14 with oppositely disposed spring brushes 15 of such length and so located as to sweep about the inner surface of the conducting blocks 6 and 7 to make contact therewith. Furthermore, the arbor 13 carries contact brushes 16 in diametric relation and arranged to engage the top surfaces of the blocks 6 and 7, assuming these surfaces to be horizontal.

The two sets of brushes 15 and 16 insure good contact and are arranged to bridge diametrically opposite blocks of the senes.

Certain of the blocks, say, half of the number of blocks 6 and 7 in regular order,

which in the case oi s vessel is usually the motel sheathing oi the vessel, but orber arrangement whereby goocl eleciricsl courses is established with the Water in which the vessel floors may be employed. lo cese o locomotive, the ground will be through tel parts of the locomotive so the role K11 thence in the earth,

Tbs inning coil 22 is proviclecl with "the usual sliding coil 2%, which latier carries a pointer 25 movable along a scale 26, @ns terminal of the sliding coil 2 is connected by a conductor 2? to one side oi e, detect- 28 of any approved form which in turn is connected by a conductor 29 be one side of a relay 30, the other side of which is connected by :1 conductor 31 co the other terminal of the coil 2%. The relay conirols circuit including audible signal such as a bell 32, s.- swi'rcli 33, 21ml a battery sucb battery being representative of any suitable source of electrical energy.

The conductors 20 are connected in common to ahelix or oscillation erensioriner 35 of appropriate form having ground connection 86 and en adjustable connection through a conductor 3? to one sicle of induction coil 38, the other sicle o1 'wbicli is connected to a spark 39 in turn eon co'iucsor 36. The spsrlr coil on oi course more e ,sielleel if desired e lion having nothing lo do n ular structures the instrum nsicle from she serial 1 Assuming Eliot the outfib is i a vessel ilie clockwork is see in motion and appropriate adjustments rnecle upon outgoing impulses sense to L e serial for briei periccl of time soy live or ien seconds, then for e lilie periccl or time the transmitting outfit s out our cool the receiving cubic is inclo i .clecl 1n circuit with the serial so time any ether r7 which may at bile illlllQ be passion, coughs by aerial end conclii-ions l bell 32 "will be csusecl is riii "3 e perioel While receiving; size or a, is included in the circuit-h lserial is of a form making it messes feasible e0 mount ii; upon the lop of a single upright such as the most or s best lie-ving but one mast, or any vessel or vehicle not suppliecl Wlill two or more spaced points capable of supporting an aerial grid.

While any suitable power unit may be used to drive the briclging brushes or arms of the switch 5, spring-actuarial clockwork is one of the most convenient means for ibe purpose. The switch arms may be mounted on the arbor 13 of the clockwork in various ways. For instance, "ebe bub ll may be slipped on to the arbor and held in place by s set screw l-1 and the end of the arbor beyond the hub i may be squared as shown or, to receive a similarly squared hub 43 carrying the brushes 16.

Any suitable signal means may be emloyed on the sending side of the outfib, and is quite possible to utilize the switch 5 ucli a means. For instance, the out-going Waves may be tuned, to a certain pitch by regulating tlie speed of the clockwork the intervals of sending may corresponel to some preerrsngernen't, whereby a series of impulses of a certain pitch interspersecl by intervals of silence occurring so n may represent a signal peculiar to the l carrying the outfit and be so recognize i as precautionary signal indicating lo tile listener eisome other poini the presence of some vessel to be avoided by some other vessel picking up "Elie signals. On the receiving side tiresome ieleo is present. but th case of (longer zones along s corset erous concli'bioris will inelics'qel rearranged signals SV1'36D1 comprising an automatic an automatic live outfits in one hell" of the serial and the is connecleci in elion to the sending and receiving one ob being provicleci with s ro- "1g member for electricsll; cosmetically opposite contests in the order of rotation of the illQlllbQR In bes imony Zlififi'; I claim "the foregoing as in have hereto sfiixecl signse in the presence of two Wiinesses.

KORE, 

